I have read that Ethereum can theoretically support large documents (1 MB), but that such transactions would be very expensive and they risk not being validated.
Most blockchain document services I have found assign a hash to a document then put the hash on the blockchain, but I am wondering if any blockchain ledgers exist that just put the whole document on the blockchain, effectively making the document itself 'immutable'?
I am brand new to this technology and I don't know its limitations or capabilities: most blockchain terminology and technology is just over my head.